Index



Nov. 3, 1942. c. PL HORNUNG 2,300,623

INDEX Filed May 23, 1941 M] INVENTOR CLARENCE P. HOENUNG ATTORN EYPatented Nov. 3, 1942 2,300,623 INDEX Clarence P. Hornung, Hempstead, N.Y., assignor of one-half to Leo H. Joachim, county of New York, N. Y.

Application May 23, 1941, Serial No. 3%,747

4 Claims.

This invent-ion relates generally to indexes and more particularly tothe class employable with or as a folder, book, index card, letter fileor index file. I

It is an object of the present invention to provide economical,efiicient and practical index means formed out of the body of the sheetcarrying the same and readily securable to said bod in operableposition.

t is a further object of the present invention to provide a sheet with asubstantially U-shaped cut adjacent an edge thereof to form a tonguefoldable on a line connecting the ends of the cut, the tongue whenfolded forming a tab having a portion protruding beyond the said edge,and with at least one cut in said sheet at said edge forming oppositelybendable portions, one of the portions having overlapping engagementwith the tab to lock the same in folded position.-

It is yet another object of the present invention to provide a sheetwith a substantially U- shaped cut adjacent an edge thereof forming atongue foldable on a line connecting the ends of the out against theunderface of the sheet thus providing a tab having a portion protrudingbeyond the mentioned edge at said underface, the said tab beingsecurable against said underface in operable position.

These and other objects of the invention will appear from the followingdisclosures thereof together with the attached drawing which illustratespreferred forms of embodiment thereof, and in which:

Fig. 1 is a fragmentary View of a sheet provided with cuts to form atongue in accordance with the invention;

Fig. 2 is a similar view showing the tongue folded to form a tab;

Fig. 3 is a view similar to Figure 2 showing an alternate form of theinvention;

Fig. 4 is an edge View of Figure 2 drawn to an enlarged scale;

Fig. 5 is a fragmentary detailed form of the sheet showing still anotherform of the invention;

Fig. 6 illustrates the invention as applied to a sheet to form an indexcard;

Fig. 7 is an end formed of a folder having the invention appliedthereto;

Fig. 8 is a front view of a book with the cover partly broken away,illustrating the application of the invention to form index tabs forsaid book.

Referring to Figs. 1, 2 and 4 there is shown a sheet I0 which mayrepresent a portion of a book, folder or letter file or an index card.Sheet ID has a substantially U-shaped cut ll formed 55 invention thetongue I3 is struck out of the body adjacent the edge 82 thereofproviding a tongue 1 l3 foldable on the line Hi connectingthe ends l5,iii of the out ll. Tongue l3 when folded over the underface of sheet it)forms a tab I! having a portion I 8 projecting beyond edge l2. Tab I1 isshown as having an arcuate-shaped edge l9. a

At edge I2 of sheet [9 there are formed inwardly directed cuts 20, 2!having offset portions 22, 23, respectively. The portions 24, 25 ofthesev cuts are alined with the cuts 25,2! of the-U-= shaped out II. Thecuts 20, 21 form oppositely bendable portions 28, 29 and 30, 3| "haveoverlapping engagement with tab H at its underface locking the latter infolded position as clearly, seen in Fig. 2. Portions 29, 3t and the partof sheet I!) therebetween overlap theadjacent portion of tab H at thetop face 32 of sheet 10.

In Fig. 3 which shows an alternate form of the invention, the tongue ortab M) has a pair ofears 4| and the cuts 42 inwardly directed from edge43 are straight. Ears 4| and portions of sheet 44 at cuts 42 adjacentthereto are in overlapping engagement thus locking the tab 49 in foldedposition.

The hinge line connecting the tongue to the .1

sheet proper and about which the tongue is folded to form the extendedtab, may be reinforced as shown in Fig. 5, in which, for example, thenumeral 45 indicates a metallic deposit on one of.

plied to a book 51, the tabs being indicated by the numeral 58.

It is understood that the forms of the invention as disclosed in Fig. 3may be applied to the devices shown in Figs. 6, '7 and 3.

Any suitable indicia may be carried by the tabs for indexing,sectioning, separating, etc. subjects matter.

To facilitate maintaining the tab in folded condition against the sheet,spot gluing (not shown) may be employed between the tab and sheet. Itwill be found, however, that the locking means shown in the drawing areeffective for the purpose.

It can be seen that in one embodiment of the of the sheet adjacent theedge [2, the tongue being foldable along the line [4 parallel to edgeI2, this line being at such distance from edge [2 which is less than thelength of the tongue whereby to form when folded a tab having a portionprotruding beyond edge l2; and that the means for securing the tabadjacent the body of the sheet comprises a pair of spaced cuts 28, 2| inthe sheet at edge I2, a portion 24, 25 of the cuts being separated fromeach other a distance equal to the width of the tab and another portion22, 23 of the cuts being separated from each other a distance less thanthe width of the tab.

Where indexes are employed particularly in books, it is customary thatthe index tabs or sheets be applied or inserted-after the book pages aretrimmed. The index made in accordance with the present inventioneliminates the necessity of applying the index tabs or sheets after thebook is trimmed because of the fact that the tongue is made out of thematerial of the sheet and then folded to form the extended tab.

The foregoing disclosures are to be regarded as descriptive andillustrative only, and not as restrictive or limitative of theinvention, of which embodiments may be constructed includingmodifications without departing from the general scope herein indicatedand denoted in the appended claims.

Having thus described the invention, what is claimed as new and desiredto be secured by Le ters Patent, is:

1. In a sheet a substantially U-shaped cut made in said sheet adjacentan edge thereof to form a tongue foldable on a line connecting the endsof said out, said tongue when folded forming a tab having a portionprotruding beyond the mentioned edge, and at least one out made in saidsheet at said edge, said latter cut forming oppositely bendableportions, one of said portions having overlapping engagement with saidtab to lock the same in folded position.

2. In a sheet a tongue struck out of the body of said sheet adjacent anedge thereof, said tongue being folded along a line parallel to saidedge, said line being at such distance from the said edge which is lessthan the length of said tongue whereby to form when folded a tab havinga portion protruding beyond said edge, and means for securing said tabadjacent said body, said means comprising at least one cut in said sheetat said edge, said out forming oppositely bendable portions, one of saidportions having over- -lapping engagement with said tab to lock the samein folded position.

' 3. In a sheet a tongue struck out of the body of said sheet adjacentan edge thereof, said tongue being folded along a line parallel to saidedge, said line being at such distance from the said edge which is lessthan the length of said tongue whereby to form when folded a tab havinga portion protruding beyond said edge, and means for securing said tabadjacent said body, said means comprising a pair of spaced cuts in saidsheet at said edge, a portion of each of said cuts being separated fromeach other a distance equal to the Width of said tab and another portionof each of said cuts being separated from each other by a distance lessthan the width of said tab.

4. In a sheet a tongue struck out of the body of said sheet adjacent anedge thereof, said tongue being folded along a line parallel to saidedge, said line being at such distance from the said edge which isless'than the length of said tongue whereby to'form when folded a tabhaving a portion protruding beyond said edge, and means for securingsaid tab adjacent said body, said means comprising at least one,extension on said tab and at least one cut in said body'at said edge,said extension and the material of said body adjacent said out being inoverlapping engagement when said tongue is folded along said line.

CLARENCE P. HORNUNG.

